THE ESSEX FIELD CLUB. 211 size and style of type, it exactly corresponds, even to the extent of having the heading "Hundred of Ongar" continued on the top of each page. At the time I considered the copy to be unique, and probably the printer's proof pull of the contemplated fourth part. In November last I observed in the catalogue of a book-seller in the South West of England a book entitled "Lambourne Parish, Essex, illustrated by J. P. Neale." In response to a telegram I was able to secure the copy, and upon examina- tion found it to be a duplicate of the so-called "History of Lambourne" in the West Ham Library, with two extra illustrations inserted. " An examination of the contents proved that the publication is a continuation of Ogborne's "History of Essex" and forms part of the contemplated fourth number. " I have made considerable enquiry and research as regards the Lam- bourne section, but failed to find that any other copy is in existence." Mr. Avery exhibited the fourth part, together with three copies of the original book, possessing some special features, from his own collection. Recent Museum Accessions.—Mr. Cole exhibited some recent dona- tions to the Museum, amongst them being:— A collection of 100 specimens of British Birds' Eggs, including some rare specimens—Mr. J. E. Harting, F.L.S.—A small Herbarium of about 80 species and varieties of British Mosses. —Mr. W. R. Sherrin. Epping Forest Ferns.—Mr. W. Richter Roberts exhibited a col- lection of Epping Forest Ferns, and made some remarks on the same which are embodied in a short paper printed in the present part. Daphia Magna.—Mr. D. J. Scourfield, F.R.M.S., exhibited living males of this Cladoceran from Epping Forest, and made some remarks on the same. (See "Notes.") Deiopeia pulchella.—Mr. Cole exhibited the specimen of the "Crimson-speckled Footman," from Mr. E. A. Fitch's collection recently acquired for the Museum. This specimen was taken on the slope of the Martello Tower at St. Osyth on 6th June 1892. (See Essex Naturalist, Vol. vi., p. 115.) Mosses of Epping Forest.—Mrs. Percy Thompson presented to the Museum a collection of 86 specimens of the mosses of the Forest, pre- served in "clumps" so as to show their natural form of growth. Mr. Percy Thompson explained the method adopted. "Pigmy" Flints from Epping Forest.—Mr. Hazzledine Warren ex- hibited and described a collection of these and other "worked" flints, and made some remarks on the subject. (See "Notes.") Worked Flints from the Valley of the Stour.—Mr. Wrigley exhibited and described some flints from a site on the Stour River. (See "Notes.") Mr. W. H. Dalton, F.G.S., F.C.S., exhibited Crystals of Gypsum formed in loose sand on Lake Karatchungul, Uralsk Province, N.E. corner of the Caspian Sea. The lake occurs in Permian gypsum, surrounded by Cretaceous sandstones, which are disintegrated and shifted by wind. In spring-floods, the lake-level rises, filling the sand with saturated solution